Home / 205,780.42-283,963.62-115,120.72

Finding the Fourth Proportional to 205,780.42, 283,963.62 and 115,120.72

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Solution

The fourth proportional to 205,780.42, 283,963.62 and 115,120.72 is: 158,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,780.42 : 283,963.62 = 115,120.72 : x
  2. Step 2: Convert to fraction form
    205,780.42/283,963.62 = 115,120.72/x
  3. Step 3: Cross multiply
    205,780.42x = 283,963.62 × 115,120.72
  4. Step 4: Simplify right side
    205,780.42x = 32,690,096,388.21
  5. Step 5: Solve for x
    x = 32,690,096,388.21/205,780.42
  6. Step 6: Final answer
    x = 158,859.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.